As a noun:
* The most common mode of transportation in this city is the subway. (referring to the method of transportation)
* The piano is played in a major mode, which gives it a cheerful sound. (referring to a musical scale)
* The teacher switched the classroom to mode quiet for the test. (referring to a setting or configuration)
* He was in a reflective mode after losing his job. (referring to a state of mind)
As a verb:
* The aircraft moded its flight path after the one used by the previous pilot. (referring to imitating or copying)
* The designer moded the new dress on a classic silhouette. (referring to creating a model or prototype)
The specific meaning of "mode" will depend on the context of the sentence.